NEST ElasticSearch C# как фильтровать на вложенном объекте

Question

У нас есть структура типа «Контакт», которая содержит вложенную структуру «Отношения». Я пытаюсь использовать клиент NEST ElasticSearch .Net для поиска и подсчета количества контактов, сохраненных сотрудником. Но не могу получить синтаксис.

Вот что я для структуры «Контакт»:

public class FieldName : FieldNameBase 
    { 
     public const string IndexTypeName = "contact"; 

     public const string Id = @"Id"; 
     public const string Name = @"name"; 
     public const string Status = @"status"; 
     public const string FirstName = @"firstName"; 
     public const string LastName = @"lastName"; 
     public const string Email = @"email"; 
     public const string AvatarUrl = @"avatarUrl"; 

     public class Relationships 
     { 
      public const string StaffID = @"staffID"; 
      public const string ContactID = @"contactID"; 
      public const string FacebookUid = @"facebookUid"; 
      public const string Name = @"name"; 
      public const string Email = @"email"; 
      public const string Level = @"level"; 
      public const string AvatarUrl = @"avatarUrl"; 
     } 
    } 

    [ElasticType(Name = FieldName.IndexTypeName, IdProperty = FieldName.Id)] 
    public class Data : AccountData 
    { 
     [ElasticProperty(Name = FieldNameBase.Id, IncludeInAll = false, Index = FieldIndexOption.NotAnalyzed)] 
     public string Id { get; set; } 

     [ElasticProperty(Name = FieldNameBase.AccountID)] 
     public int AccountID { get; set; } 

     [ElasticProperty(Name = FieldName.FirstName, IncludeInAll = false, Index = FieldIndexOption.Analyzed)] 
     public string FirstName { get; set; } 

     [ElasticProperty(Name = FieldName.LastName, IncludeInAll = false, Index = FieldIndexOption.Analyzed)] 
     public string LastName { get; set; } 

     [ElasticProperty(Name = FieldName.Name, IncludeInAll = true, Index = FieldIndexOption.Analyzed)] 
     public string Name { get; set; } 

     [ElasticProperty(Name = FieldName.AvatarUrl, IncludeInAll = true, Index = FieldIndexOption.NotAnalyzed)] 
     public string AvatarUrl { get; set; } 

     [ElasticProperty(Name = FieldName.Email, IncludeInAll = true, Index = FieldIndexOption.NotAnalyzed)] 
     public string Email { get; set; } 

     [ElasticProperty(Name = FieldName.Phone, IncludeInAll = false, Index = FieldIndexOption.NotAnalyzed)] 
     public string Phone { get; set; } 

     [ElasticProperty(Type = FieldType.Nested)] 
     public List<Relationship> Relationships { get; set; } 

     public class Relationship 
     { 
      [ElasticProperty(Name = FieldName.Relationships.StaffID)] 
      public int? StaffID { get; set; } 

      [ElasticProperty(Name = FieldName.Relationships.ContactID, IncludeInAll=false, Index = FieldIndexOption.NotAnalyzed)] 
      public string ContactID { get; set; } 

      [ElasticProperty(Name = FieldName.Relationships.FacebookUid, IncludeInAll = false, Index = FieldIndexOption.NotAnalyzed)] 
      public string FacebookUid { get; set; } 

      [ElasticProperty(Name = FieldName.Relationships.Name, IncludeInAll = false, Index = FieldIndexOption.Analyzed)] 
      public string Name { get; set; } 

      [ElasticProperty(Name = FieldName.Relationships.Email, IncludeInAll = false, Index = FieldIndexOption.NotAnalyzed)] 
      public string Email { get; set; } 

      [ElasticProperty(Name = FieldName.Relationships.Level, IncludeInAll = false, Index = FieldIndexOption.Analyzed)] 
      public string Level { get; set; } 

      [ElasticProperty(Name = FieldName.Relationships.AvatarUrl, IncludeInAll = false, Index = FieldIndexOption.NotAnalyzed)] 
      public string AvatarUrl { get; set; } 
     } 

    } 

Теперь я пытаюсь использовать в качестве кода для возврата результатов или просто подсчета является следующим (Примечанием я оставил результаты вдаваясь в список более из проб ошибка, как я до сих пор пытаюсь понять, как просто получить счет, а):

public int GetFriendCount(int staffID) 
    { 
     List<Data> list = new List<Data>(); 

     base.ConnectStatus = null; 

     var results = this.Client.Search<Data>(s => s 
      //.SearchType(Elasticsearch.Net.SearchType.Count) 
      .Query(q => q.MatchAll()) 
      .Filter(f => 
        f.Nested(n => n 
        .Path("relationships") 
        .Filter(f2 => f2 .Term("relationships.staffID", staffID)) 
        ) 
       ) 
      // .Nested 
      ); 

     if (results != null) 
     { 
      base.ConnectStatus = results.ConnectionStatus; 

      if (results.Documents.Count<Data>() > 0) 
       list = results.Documents.ToList<Data>(); 
     } 

     return list.Count; 
    } 

Answer 1

 var results = this.Client.Search<Data>(s => s 
      .Query(q => q 
       .Nested(n => n 
        .Path("relationships") 
        .Filter(f => f.Term("relationships.staffID", staffID)) 
       ) 
      ) 
     );